Cardiff City 2 Blackburn Rovers 0: Cardiff heaped further pressure on Blackburn manager Steve Kean as goals from Kenny Miller and Anthony Gerrard put the Welsh club into the last four of the Carling Cup for the first time since 1966.
Scotland striker Miller opened the scoring in the 19th minute with a low left-footed finish and Gerrard sealed the win by nodding home five minutes after the break after Blackburn keeper Mark Bunn had failed to deal with a corner.
At the other end David Goodwillie had his headed effort well saved by Cardiff keeper Tom Heaton and Scott Dann also nodded wide, but in truth Rovers were well beaten and the visiting support made clear their dissatisfaction with repeated chants of "Kean out".
The evening had begun with Cardiff City Stadium uniting in a round of applause and a minute's silence in memory of Wales manager Gary Speed, with the home support regularly breaking into chants of "There's only one Gary Speed" throughout the contest.
Blackburn's early dominance ended when Aron Gunnarsson seized on a poor pass by Henrik Pedersen to play Miller in to beat Bunn with a low left-footed finish.
It could have been 2-0 five minutes later as Miller outwitted Hanley on the byline and jinked past Bunn, only for his shot to be blocked by Dann with the home crowd baying for a handball against the former Birmingham man.